Home / 78,245,999.70-117,368,999.55-27,111,023.70

Finding the Fourth Proportional to 78,245,999.70, 117,368,999.55 and 27,111,023.70

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Solution

The fourth proportional to 78,245,999.70, 117,368,999.55 and 27,111,023.70 is: 40,666,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245,999.70 : 117,368,999.55 = 27,111,023.70 : x
  2. Step 2: Convert to fraction form
    78,245,999.70/117,368,999.55 = 27,111,023.70/x
  3. Step 3: Cross multiply
    78,245,999.70x = 117,368,999.55 × 27,111,023.70
  4. Step 4: Simplify right side
    78,245,999.70x = 3,181,993,728,445,339
  5. Step 5: Solve for x
    x = 3,181,993,728,445,339/78,245,999.70
  6. Step 6: Final answer
    x = 40,666,535.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.